001package net.sf.cpsolver.ifs.example.tt; 002 003import java.util.ArrayList; 004import java.util.Collection; 005import java.util.HashSet; 006import java.util.List; 007import java.util.Set; 008 009import net.sf.cpsolver.ifs.model.Variable; 010 011/** 012 * Activity (variable). It encodes a name, length 013 * 014 * @version IFS 1.2 (Iterative Forward Search)<br> 015 * Copyright (C) 2006 - 2010 Tomáš Müller<br> 016 * <a href="mailto:muller@unitime.org">muller@unitime.org</a><br> 017 * <a href="http://muller.unitime.org">http://muller.unitime.org</a><br> 018 * <br> 019 * This library is free software; you can redistribute it and/or modify 020 * it under the terms of the GNU Lesser General Public License as 021 * published by the Free Software Foundation; either version 3 of the 022 * License, or (at your option) any later version. <br> 023 * <br> 024 * This library is distributed in the hope that it will be useful, but 025 * WITHOUT ANY WARRANTY; without even the implied warranty of 026 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 027 * Lesser General Public License for more details. <br> 028 * <br> 029 * You should have received a copy of the GNU Lesser General Public 030 * License along with this library; if not see 031 * <a href='http://www.gnu.org/licenses/'>http://www.gnu.org/licenses/</a>. 032 */ 033public class Activity extends Variable<Activity, Location> { 034 private int iLength = 1; 035 private String iActivityId = null; 036 private String iName = null; 037 private ArrayList<List<Resource>> iResorces = new ArrayList<List<Resource>>(); 038 private Set<Integer> iProhibitedSlots = new HashSet<Integer>(); 039 private Set<Integer> iDiscouragedSlots = new HashSet<Integer>(); 040 041 public Activity(int length, String id, String name) { 042 super(null); 043 iLength = length; 044 iActivityId = id; 045 iName = name; 046 } 047 048 @Override 049 public String getName() { 050 return iName; 051 } 052 053 public String getActivityId() { 054 return iActivityId; 055 } 056 057 public int getLength() { 058 return iLength; 059 } 060 061 public void addResourceGroup(List<Resource> resources) { 062 for (Resource r : resources) 063 r.addVariable(this); 064 iResorces.add(resources); 065 } 066 067 public void addResourceGroup(Resource[] resources) { 068 ArrayList<Resource> rg = new ArrayList<Resource>(resources.length); 069 for (int i = 0; i < resources.length; i++) { 070 rg.add(resources[i]); 071 resources[i].addVariable(this); 072 } 073 iResorces.add(rg); 074 } 075 076 public void addResourceGroup(Resource resource) { 077 ArrayList<Resource> rg = new ArrayList<Resource>(1); 078 rg.add(resource); 079 iResorces.add(rg); 080 resource.addVariable(this); 081 } 082 083 public List<Resource> getResourceGroup(int idx) { 084 return iResorces.get(idx); 085 } 086 087 public List<List<Resource>> getResourceGroups() { 088 return iResorces; 089 } 090 091 public Set<Integer> getProhibitedSlots() { 092 return iProhibitedSlots; 093 } 094 095 public Set<Integer> getDiscouragedSlots() { 096 return iDiscouragedSlots; 097 } 098 099 public void addProhibitedSlot(int day, int hour) { 100 iProhibitedSlots.add(((TimetableModel) getModel()).getNrHours() * day + hour); 101 } 102 103 public void addDiscouragedSlot(int day, int hour) { 104 iDiscouragedSlots.add(((TimetableModel) getModel()).getNrHours() * day + hour); 105 } 106 107 public boolean isProhibitedSlot(int day, int hour) { 108 return iProhibitedSlots.contains(((TimetableModel) getModel()).getNrHours() * day + hour); 109 } 110 111 public boolean isDiscouragedSlot(int day, int hour) { 112 return iDiscouragedSlots.contains(((TimetableModel) getModel()).getNrHours() * day + hour); 113 } 114 115 public void addProhibitedSlot(int slot) { 116 iProhibitedSlots.add(slot); 117 } 118 119 public void addDiscouragedSlot(int slot) { 120 iDiscouragedSlots.add(slot); 121 } 122 123 public boolean isProhibitedSlot(int slot) { 124 return iProhibitedSlots.contains(slot); 125 } 126 127 public boolean isDiscouragedSlot(int slot) { 128 return iDiscouragedSlots.contains(slot); 129 } 130 131 public boolean isProhibited(int day, int hour, int length) { 132 int slot = ((TimetableModel) getModel()).getNrHours() * day + hour; 133 for (int i = 0; i < length; i++) 134 if (iProhibitedSlots.contains(slot + i)) 135 return true; 136 return false; 137 } 138 139 public void init() { 140 setValues(computeValues()); 141 } 142 143 private void addValues(Collection<Location> values, int day, int hour, int level, Resource[] resources) { 144 if (level == getResourceGroups().size()) { 145 values.add(new Location(this, day, hour, resources.clone())); 146 return; 147 } 148 Collection<Resource> rg = getResourceGroups().get(level); 149 for (Resource r : rg) { 150 if (r.isProhibited(day, hour, getLength())) 151 continue; 152 resources[level] = r; 153 addValues(values, day, hour, level + 1, resources); 154 } 155 } 156 157 public List<Location> computeValues() { 158 List<Location> values = new ArrayList<Location>(); 159 Resource[] res = new Resource[getResourceGroups().size()]; 160 for (int day = 0; day < ((TimetableModel) getModel()).getNrDays(); day++) 161 for (int hour = 0; hour <= ((TimetableModel) getModel()).getNrHours() - getLength(); hour++) { 162 if (isProhibited(day, hour, getLength())) 163 continue; 164 addValues(values, day, hour, 0, res); 165 } 166 return values; 167 } 168}